var box = document.getElementById('box');
var number = document.getElementById('number');
box.style.width = document.documentElement.clientWidth||document.body.clientWidth+'rem';
box.style.height = document.documentElement.clientHeight||document.body.clientHeight+'rem';

var r = parseInt(Math.random()*2);	

var arr = ['87.21%','91.47%'];

number.innerHTML = arr[r];

var recome = document.getElementById('recome');
recome.onclick = function(){
	 window.open('结束页1.html','_blank');
}
